西亚试剂：Symbiotic Bacterium Modifies Aphid Body Color

Symbiotic Bacterium Modifies Aphid Body Color
Tsutomu Tsuchida1,*?, Ryuichi Koga2,?, Mitsuyo Horikawa3, Tetsuto Tsunoda3, Takashi Maoka4, Shogo Matsumoto1, Jean-Christophe Simon5 and Takema Fukatsu2,*

1Molecular Entomology Laboratory, RIKEN Advanced Science Institute, Wako 351-0198, Japan.
2National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, Japan.
3Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan.
4Research Institute for Production Development, Kyoto 606-0805, Japan.
5Institut National de la Recherche Agronomique, UMR 1099 BiO3P, Institut National de la Recherche Agronomique (INRA)/Agrocampus Ouest/Université Rennes 1, BP 35327, 35653 Le Rheu Cedex, France.

Color variation within populations of the pea aphid influences relative susceptibility to predators and parasites. We have discovered that infection with a facultative endosymbiont of the genus Rickettsiella changes the insects’ body color from red to green in natural populations. Approximately 8% of pea aphids collected in Western Europe carried the Rickettsiella infection. The infection increased amounts of blue-green polycyclic quinones, whereas it had less of an effect on yellow-red carotenoid pigments. The effect of the endosymbiont on body color is expected to influence prey-predator interactions, as well as interactions with other endosymbionts.

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